Leoncio Alonso González de Gregorio y Álvarez de Toledo, 22nd Duke of Medina Sidonia, GE (born 3 January 1956) is a Spanish aristocrat and historian.

Born in Madrid, Medina Sidonia is the eldest son of Leoncio González de Gregorio y Martí and his wife Luisa Isabel Álvarez de Toledo, 21st Duchess of Medina Sidonia. The Duke is Professor of History at the University of Castile-La Mancha and of the Diplomatic School of the Ministry of Foreign Affairs and Cooperation.

Family González de Gregorio married his distant cousin María Montserrat Viñamata y Martorell, the younger daughter of Luis Viñamata y Emmanueli and María de la Concepción Martorell, 23rd Countess of Alba de Liste, firstly, on 12 December 1983, and divorced in 1998. They had two children:

Don Alonso Enrique González de Gregorio y Viñamata, 14th Duke of Fernandina (b. 1983) Doña María de la Soledad González de Gregorio y Viñamata (b. 1989), who married in September 2017, Jérémy Bégard.

The Duke married Pamela García Damián, of Venezuelan origin, daughter of Armando García Liceaga y Pérez de Viñaspre and María Pilar Damián Gracia, secondly, in 2001.

Ancestry

Titles and styles

Titles 22nd Duke of Medina Sidonia, Grandee of SpainBoletín Oficial del Estado: no. 183, p. 32845, 30 July 2008. 18th Marquess of Villafranca del Bierzo, Grandee of SpainBoletín Oficial del Estado: no. 132, p. 47106, 31 May 2010. 17th Marquess of los Vélez, Grandee of SpainBoletín Oficial del Estado: no. 132, p. 47104, 31 May 2010. 26th Count of Niebla

Styles The Most Excellent The Count of Niebla (1956–2008)Although with the Countship of Niebla not a Grandeeship of Spain is attached, the Duke was styled already as The Most Excellent, since he was heir apparent to a Grandee, who are styled similar as their parents (while younger children are styled The Most Illustrious). Francisco López-Nieto y Mallo, Honores y Protocolo, 2 Volumes, Consultor, 2006. and The Most Excellent The Duke of Medina Sidonia (2008– )

References

Sources www.geneall.net Elenco de Grandezas y Títulos Nobiliarios Españoles, Hidalguía Editions, 2008